The paper describes a new type of compact corrugated horn in which an unwanted higher order mode is cancelled at mid-band yielding a performance compatible with a conventional horn three times its length. Simple design equations are presented which enable a fast optimisation routine to be used in order to determine key parameters. Favourable comparison is made between measurements and predictions obtained using a well tried modal matching method.
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Clarricoats et al. (2004) studied this question.
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